what force does a person have to exert on one side of a seesaw if the other person weighs 70kg and is the same distance away from the pivot (2m) on the other side of the seesaw?
70kg x 9.8 = 686N x 2 = 1372 Nm, as 2m away again, divide by 2 = 868 Newtons
MB
Related Physics GCSE answers
All answers ▸Explain why evaporation cools a liquid.
A satellite is in orbit of the Earth, and moves at a constant orbital speed of 3055.5m/s. If it is at an altitude of 35786km, calculate the time period for a complete cycle, giving your answer in hours. Answer should be given in in 3 significant figures.
which part of the electromagnetic spectrum provides most of the energy to heat the water in a solar thermal power station?, how does this heated water allow electricity to be generated?
Describe the energy transfers taking place when a person is running up a hill